Ratio and Proportion Problems

This video tutorial covers the concept of equivalent ratios through various examples, including calculating the number of pennies from a given mass, determining reading time, calculating cheese needed for pizzas, and comparing car speeds. It also explains how to calculate earnings per second and create equivalent juice blend ratios. The tutorial concludes with a detailed explanation of equivalent ratios using different examples.

If Priya collected 2400 grams of pennies, and each penny weighs 2.5 grams, how many pennies did she collect?

• 960

• 1200

• 1500

• 1000

Kieran reads 5 pages in 20 minutes. How long will it take him to read 11 pages?

• 50 minutes

• 40 minutes

• 55 minutes

• 44 minutes

Mai uses 10 ounces of cheese for 4 pizzas. How much cheese is needed for 15 pizzas?

• 40 ounces

• 37.5 ounces

• 35 ounces

• 45 ounces

Claire earns $18 in one hour. How many seconds does it take her to earn 25 cents?

• 100 seconds

• 75 seconds

• 60 seconds

• 50 seconds

A car travels 20 miles in half an hour. How far will it travel in 3/4 of an hour at the same speed?

• 25 miles

• 35 miles

• 30 miles

• 40 miles

What is the equivalent ratio of 60 to 45?

• 5 to 4

• 2 to 1

• 4 to 3

• 3 to 2

If a juice blend has a ratio of 3 to 7 for cranberry to apple juice, what is the ratio for a larger batch with 9 parts cranberry?

• 27 parts apple

• 24 parts apple

• 18 parts apple

• 21 parts apple

Which of the following is an equivalent ratio to 600:450?

• 4:3

• 5:4

• 3:2

• 2:1

If a car travels 30 miles in 3/4 of an hour, what is its speed in miles per hour?

• 20 mph

• 25 mph

• 30 mph

• 40 mph

What is the simplified form of the ratio 200 to 150?

• 3 to 2

• 4 to 3

• 5 to 4

• 2 to 1